Sanders, who served as press secretary to Bernie Sanders’s 2016 presidential campaign and is now a senior adviser to the Biden campaign, responded on Twitter Thursday to a Politico report that she donated to the 37-year-old mayor’s presidential campaign in March.

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“I also donated to [former Housing and Urban Development Secretary Julián] Castro and [New York Sen. Kirsten] Gillibrand because I believed then and do now that they all should have their shot on the debate stage,” Sanders tweeted. “Lots of folks donated to a lot of campaigns for this very same reason. Couldn’t be happier to be on #TeamBiden.”

Lol yes. I also donated to Castro and Gillibrand because I believed then and do now that they all should have their shot on the debate stage. Lots of folks donated to a lot of campaigns for this very same reason. Couldn’t be happier to be on #TeamBidenhttps://t.co/dphwT2VuUA

Per rules set by the Democratic National Committee, candidates in the crowded 2020 presidential primary will qualify for debates if they have at least 1 percent support in three qualifying polls or have received at least $65,000 in individual donations from at least 200 donors in at least 20 states.

Sanders, 29, was confirmed to be joining Biden’s campaign Thursday, the same day the former vice president made his bid official. She confirmed her hiring on Twitter as well, writing: “Over the course of this campaign, Vice President Biden is going to make his case to the American [people]."

CNN, where Sanders has served as a contributor since 2016, confirmed she would not continue in that role.